18316801666536 has 32 divisors (see below), whose sum is σ = 45797774077440. Its totient is φ = 6104831234048.

The previous prime is 18316801666523. The next prime is 18316801666543. The reversal of 18316801666536 is 63566610861381.

It is a super-3 number, since 3×18316801666536³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18316801666536.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47888136 + ... + 48269111.

It is an arithmetic number, because the mean of its divisors is an integer number (1431180439920).

Almost surely, 2^{18316801666536} is an apocalyptic number.

It is an amenable number.

18316801666536 is an abundant number, since it is smaller than the sum of its proper divisors (27480972410904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18316801666536 is a wasteful number, since it uses less digits than its factorization.

18316801666536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96165193 (or 96165189 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 18316801666536 in words is "eighteen trillion, three hundred sixteen billion, eight hundred one million, six hundred sixty-six thousand, five hundred thirty-six".